In Figure 1, the letters A, E, G, J and Z show the positions of six elements in the periodic table - Edexcel - GCSE Chemistry - Question 2 - 2019 - Paper 1
Question 2
In Figure 1, the letters A, E, G, J and Z show the positions of six elements in the periodic table.
These letters are not the symbols of the atoms of these elements... show full transcript
Worked Solution & Example Answer:In Figure 1, the letters A, E, G, J and Z show the positions of six elements in the periodic table - Edexcel - GCSE Chemistry - Question 2 - 2019 - Paper 1
Step 1
give the letters of the two elements that are non-metals.
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Answer
The two elements that are non-metals in the periodic table are represented by the letters E and X.
Step 2
give the letters of two elements in period 2.
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Answer
The two elements in period 2 are represented by the letters A and E.
Step 3
give the letter of an element that normally forms an ion with a charge of +1.
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Answer
The element that normally forms an ion with a charge of +1 is represented by the letter J.
Step 4
Explain, in terms of subatomic particles, what is meant by the term isotopes.
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Answer
Isotopes are variants of a particular chemical element which differ in neutron number, and consequently in nucleon number. They have the same number of protons (which defines the element) but different mass numbers due to the difference in the number of neutrons. For example, if Element E has an atomic number of 5, it has 5 protons. The isotopes will have 5 protons as well, but one isotope may have 5 neutrons (mass number 10) and another may have 6 neutrons (mass number 11).
